The expansion will double the size of SoftLayer’s corporate headquarters from 63,000 sf. SoftLayer plans to consolidate its offices into its new Dallas headquarters in February 2015. The property previously housed Encana Oil & Gas roughly two years ago.

At the beginning of the year, SoftLayer employed 250 people at its Dallas office, but COO Francisco Romero expects that number to grow to about 500 employees.

In Dallas, SoftLayer expects to hire workers to fill 250 new jobs by the end of 2015.

The company’s aggressive growth plan is fueled by a $1.2 billion investment by IBM, who purchased the company in 2013.

SoftLayer's expansion matches the cloud infrastructure industry, which has grown tremendously in the past few years as traditional IT shifts to the cloud.